Exhibit 99.1 MBNA MASTER CREDIT CARD TRUST II SERIES 1994-A KEY PERFORMANCE FACTORS December 31, 1998 Expected B Maturity 9/15/99 Blended Coupon 5.7715% Excess Protection Level 3 Month Average 5.78% December, 1998 5.78% November, 1998 5.67% October, 1998 5.87% Cash Yield 18.72% Investor Charge Offs 4.98% Base Rate 7.96% Over 35 Day Delinquency 4.96% Seller's Interest 10.83% Total Payment Rate 13.62% Total Principal Balance $ 41,270,703,888.09 Investor Participation Amount $ 760,000,000.00 Seller Participation Amount $ 4,468,784,369.60